Automatic switch-governor.



No; 870,935. PATENTED Nov. 12, 1907. L. GOLSON & G. GBBAUBR. I AUTOMATICSWITCH GOVERNOR.

APPLICATION PIL ED JUNE 25. 190'].

2 sums-sum 1.

A TTOHNEYS WITNESSES I No. 870,935. PATENTED NOV. 12, 1907.

L. GOLSON & G. GEBAUER.

AUTOMATIC SWITCH GOVERNOR.

v APPLICATION FILED JUNE 25. 1907.

N VE N T017 5 .Z sonar-d Cola-an Q'arfes eaaer By M WITNESSES Sa a, HM

A TTOHNE Y8 UNITED sTAg sf rENT OFFICE.

LEONARD OOLSON AND CHARLES GEBAUER, OF NEW YORK, N. Y.; SAID COLSONASSIGNOR TO SAID GEBAUER.

AUTOMATIC SWITCH-GOVERNOR.

Specification of Letters Patent.

rimmed Nov. 12, 1907.

Application filed June 25. 1907. Serial Ho. 380.814-

7 To all whom it may concern:

Be it known that we, LEONARD Censor: and Onannns GEBAUER, both citizensof the United States, and residents of the city of New York, borough ofBrooklyn, in the county of Kings and State of New York, have invented anew and Improved Automatic Switch- Governor, of which the following is afull, clear, and exact description.

Our invention relates to automatic switch governors, our more particularobject being to produce a mechanism of this type suitable for use inconnection with stereopticons and with projectors for moving pictures,and in which the lamp is automatically extinguished in case themechanism moving the film oi the projector is stopped, so that the heatfrom the lamp endangers the film.

Our invention further relates to means whereby the lamp maybe keptburning even when the film of the projector is motionless or has a lowerspeed, provided the lamp is for the moment used in connection with astereopticon and independent of the projector for moving pictures.

Our invention also relates to certain details of construction wherebythe general efficiency of the lamp and its associated parts are greatlyimproved.

Reference is to be had to the accpmpanying drawings forming a partoithis specification, in which simi- 'lar characters of referenceindicate corresponding parts in all the figures.

Figure 1 is a side elevation, partly diagrammatic, showing our inventionas comprising a movable eleclamp used in connection with a projector formoving pictures and with a stereopticon, the position of the lamp andalso thecondition of the projector determining whether the lamp islighted or not; Fig. 2 is a fragmentary elevation of the electricallyoperated I switch employed for opening the circuit when the 2 and 3,this view indicating how the switch is opened when the solenoid isenergized; Fig. 5 is a side elevation of the governor and its contactmechanism, used for opening and closing the circuit controlling thesolenoid shown in Fig. 3; Fig. 6 is a side elevation of the switch shownin. the upper part of Fig. 7, and opened "by the lamp 10 when the latteroccupies one 7 of its extreme positions, the opening of this switchserving to prevent the governor contact from closing the circuit of thesolenoid when the lamp occupies a position adjacent to the stereopticonrather than to the projector for moving pictures; and Fig. 7 is a reduced plan view of the table upon which rest the lamp, the stereopticonand the projector for moving pictures. I V Y The projector for movingpictures may be seen at 8 (Fig. 7), the stereopticon at 9 and theelectric lamp 10, slidable upon the ways 11, may be moved into registrywith either the projector or the stereopticon, as desired. The oflicesof the stereopticon and the projector are independent to the extent thatthe same source of light is employed in each so that the use of theprojector is alternated, if desired, by the use of thestereopticon.

It is a known fact that a powerful light is needed both for theprojector and for the stereopticon, and it is also known that the heatincidental to this light endangers the film used with the projector,this film being ordinarily of celluloid or other highly combustiblematerial. This danger is so great that if the film stops moving for afew seconds or even if its speed drops below a certain definite limit,the film is liable to take fire and thus produce a conflagration,besides irreparably damaging much of the apparatus. Hence, itis'desirable, in case the film should stop or slow up, that the lampshall be automatically extinguished. It is also desirable that when thelamp is moved away from the projector and used for illuminating thestereopticon, the mechanism used for extinguishing the lamp shall be,for the moment, inoperative so that the burning of the lamp continuesindependently of the motion of the film of the projector, or ratherindependent ofthe movable parts used for propelling this film.

The desired results just mentioned are attained by aid of our apparatus.For convenience many of the parts are mounted upon a table 10'. At 12 isshown a centrifugal governor provided with weights 12 and movable by abelt 13, the latter being propelled by mechanism 14 used for moving thefilm 15. This film passes through the proj ector8 in the manner wellknown and is partially stored within two magazines 16, 17 and movesaround rollers 18, 19 from one of these magazines into the other. Guides20, 21 support the film, and the light from the electric lamp is thrownupon that portion of the film intermediate of the guides. Lens holders22, 23, of usual construction, are mounted respectively upon thestereopticon and the projector.

Referring now to the left of Fig. 1, it will be seen that at 24 is aswitch handle mounted upon a movable bar 24, the latter-being supportedupon switch knives 25, 26 which areadapted to engage contact members 27,28. The switch knives are mounted upon pivotal connections 29, 30 in theusual manner; From the contact member 27 a wire 31 leads toa bindingpost 32 of a fuse Th e latter is provided with-a binding 34.

box p 4 whicgi j cennects'witlr a" The opposite-lead 86 connectswithabinding post 37 The fuse lion-,fiiiis,

I provided'with anothenbinding post 38whicli is con:

nectedJby'axwireBQ with the contact member 28.

'Fro rh the pivotal connection29 a wire 40 leads to. theelectric'jampland communicates withthe upper a carbonal4ll. Thelowercarbon42 is means of'wires 43, 44 iu'electrical-co' unication with thcpivotal e hg A wire'j4'5 is connected witli t he wire and with ai-solenoid 46; the latter a wire-47 leadsito a Stationary contactmambo-r48 upon the board 48.- A contactsp'iing49 is likewise'mountedupon this board and is adapted to engage and disengage'the-stationarycontact member 48. Fromth'e' contact spring49 awirebQ leads toa'contact' spring 51. The governor' lZ is pro vided with a contact disk52 adapted tuengage 'and-disengage the contact spring 51'; The" inovable.parts of the governor are mounted in 'a metallic frame 53, the latterbeing connected by. aj'wire;54;with the wires 4- 3 The bar24" (see'l ig.3), is provided with a boss 24 which is engaged by a hook 56. This hookis integral with a lever 58 mounted upon a pivot 57 and passing througha'slot 59 in the board 55. Two plungers 60 pass loosely through .thisboard and are provided with reduced portions 61 having stop pins 62extending axie ally through them. Encircling these'reduced portions arespiral springsl63 which abut against the plungers 60 and also against abar 64. The latter is secured rigidly in position by means 0i spacingpins 64". :A spring 65 is connected. with thelever58. and serves to giveit pr'opertension. q

A casing 66 contains a solenoid 67 providedwith a movable armature corev68 the upper end of whichis -pro,vided-with a plunger 69. This plungeris adapted to engage the under side oi the lever 58, and so rock thislever that the hook 56 is withdrawn from the boss 24", therebyliberating the switch b'ar 24*,and the tension oithe springs 63'causesthe plungers 60 to throw this bar outwardly from the board {therebyopening the switch. The solenoid 67 supported upon a shelf 70 when theparts are in IIOlTlllalCOlldltlOll. v

The operation of our device is as follows: The parts being in theposition indicated in Fig. 1, and the projectbr 8 being in action, the.film 15 is continuously drawn from the magazine 16 and passed into themaga zine 17. The lamp circuit which we designate as the main circuit isnow energized as follows: lead 36,

binding posts 37, 38, wire 39,.contacthmember 28,

' knife 26, pivotal connection 30, wire 44, wire43, lower carbon 42,upper carbon 41, wire 40, pivotal connec':

tion 29, knife 25, contact member 27, wire 31, binding posts 32, 34,lead 35 to source of electricity, and thence back to lead 36. Thisenergizes the electric lamp.

The wheel connected with the mechanism 14 used for moving the film,confers motion upon the belt 13 and the latter causesthe. centrifugalgovernor 12 to be thrown into action. Engagement between the contactmembers 51, 52 is thus prevented'so long as the speed 'of the filmexceeds ,a predeterminedlimit. The

solenoid 46 is now dead. Suppose thatfor some reason the mechanismmoving the film 15 is brought to a standstill or even slows up beyondthe limit above broken}.

mentioned." The centrifugal" tremor- 12 slows: wn,

being that the disk 2 engages th contact 48,.-wir',l"solenoid 46, wire45, pivotal con- -.nection gs; sa eeie t 27, wire31, binding posts 32,-j3 jffb'ack through source of electricity lthroughdeadfifir completionof the circuit just tracedgenergiz esther solenoid46 and causes the core68 to leapupward, effplunger 69'; strikes the lever 58 and 'disen'gagesthe, 56 from the boss 24.

sprin'g63 pressing the plunger 60 throws the.

'The' switch knives 25, 26 and handle 24, outward thus open- *ingthfeswitch' and. extinguishing the light of the elec- 'tric lamp 10,,fTliisbeingdone' the film 15 is rendered j saie iromexcessiveJheat -homthe lamp. Suppose, now, the operator desires to usethe lamp l0 inconnection with the f stereopticon He slides the lamp 10 along theways11 into its extreme position (indicated top; of Fig.7) so. that the lampl0 ,lodges instrl lle coma-0i? pring 49 and thus OPQnB the con-fl tactmade, bythis spring and ithe stationary contact member 48. The momentumof the governor 12 and j instantaneous'closure of the contactconsistingof parts 51, 52, sothet'when the lamp 10 is 'movedagain'st'the springcontact 49 the latter is disengaged from the sta- .tionary"contact 48beiore thecontact disk 52 has time to settle upon the spring contact 51.The result is that the movable parts connected with it prevents the thecircuit through-the solenoid 46 is not closed by the dropping oi thedisk" 52 because this circuit goes through thecontac't spring 49 and thestationary contactmember 48." The .lamp therefore continues to burn, themain circuit being endangered. It, now, it

be desired to move the lamp 10 back into registry with the projector 8the operator simply slides the lamp back into its original positionindicated in Fig. 7 and starts up the mechanism for moving the film 15.The instant closure of the spring 49 against the stationary contact 48insures the partial completion of the circuit through the solenoid andyet th'e'solenoid cannever be energized except when the'governor stops,

for the reason. that the circuit through the solenoid can only be closedwhen both conditions occur after .one

contact between spring 49 and contact' member 48,

and contact between disk 52 and contact spring 51.

Having thus described our invention, we claim as new and desire tosecure by Letters Patentz.

1. The combination of a moving picture projectonan electric lamp movablerelatively to said projector, and I means controllable by the positionof said lamp relatively to said projector for lighting and extinguishingsaid lamp.

2. The combination of a stereoptlcon, a projector disposed adjacent tosaid stereo'pticon, a lamp movable relatlvely to said projector and tosaid stereopticon so as to be used with either said projector or saidstereopticon at the will of the operator, a switch to be opened andclosed by movements of said lamp, electric mechanism connected with saidswitch for lighting and extinguishing said lamp,

a governor co-acting with said projector, and a contact I I to be openedand closed by said governor, the action of said contact being dependentuponthe speed of said gov- .ernor, said contact being connected withsaid electric mechanism tor lighting and extinguishing said lamp.

3. The combination or. a projector for rnovlng pictures,

a stereopticon, a lamp common to said projector and said stereopticon,said lamp being movable relatively thereto, speed-controlled mechanismconnected with said projector for extinguishing said lamp when the speedof said speed-controlled mechanism drops below a predetermined limit,and means controllable by said lamp for preventing said speed-controlledmechanism from extinguishing said lamp when said lamp is usedexclusively with said stereopticon.

4. The combination of a movable electric lamp, a cir cult for energizingthe same, an electrically-operated switch for opening said circuit,thereby deenergizing said lamp, a circuit connected with said switch foropening the latter, mechanism controllable by the position of said lampfor opening said last-mentioned circuit, and a picture projector to beilluminated by said lamp.

5. The combination of a picture projector, an electric lamp movablerelatively to said picture projector tor illuminating the same, acircuit connected with said lamp for energizing the latter, and meanscontrollable by movements of said lamp for breaking said circuit.

6. The comblnation.of a projector, a speed-controlled governor connectedtherewith, a contact connected with saidgovernor and opened and closedby variations in the speed thereof, and an electric lamp incommunication with said contact and controllable thereby forilluminating said projector.

T. The combination of a lamp, a picture projector provided with amovable film and with means for actuating said film, and mechanismincluding a speed governor connected with said means and controllable bymovements thereof for extinguishing said lamp.

8. The combination of a picture projector provided with means forsupporting a movable film, a governor connected with said projector andhaving. a speed related to that of said film, a lamp for illuminatingsaid film, and means controllable by the speed of said governor for extinguishing said lamp whenever the speed of said film drops below apredetermined limit.

9. The combination of a picture projector provided with means forsupporting a movable film, a governor connected with said projectorhaving a speed related to the speed of said film. an electric lampmovable relatively to said projector for illuminating said iilm, acircuit for energizing said lamp, mechanism controllable by move mentsof said lamp for opening and closing said circuit, and a contactconnected with said governor and controllabie by movements thereof foropening and closing said circuit.

In testimony whereof we have signed our names to this specification inthe presence of two subscribing witnesses.

' LEONARD COLSON.

CHARLES GEBAUER. Witnesses:

MAX ERDTMANN, AGNES E. SCI-IROEDER.

